Dispensing attachment for containers



J1me 1935. ROTHCHILD ET AL DISPENSING ATTACHMENT FOR CONTAINERS Filed March 9, 1934 I IIIIIIIII Patented June 11, 1935 UNITED STATES DISPENSING ATTACHMENT FOR CONTAINERS Lester Rothcliild and Russell T. Anderson, Denver, 0010.; said Anderson assignmto said Rotlichild Application March 9,

3 Claims.

This invention relates to a dispensing attachment for containers and is more particularly designed for spraying liquids, such as window and glass cleaning fluids, spring oils, etc., from cans although it is of course not limited to this particular use.

The principal object of the invention is to provide a simple, economical, compact device which can be readily placed on the usual threaded nipple of a can or bottle and which can be conveniently operated with a single hand.

Another object of the invention is to so construct the device that it will be adaptable or interchangeable to suit different depths of containers and different solution viscosities.

A further object is to provide an article of this character in which the parts will be readily adaptable to die casting so that no expensive machine work will be required in the manufacture.

Other objects and advantages reside in the detail construction of the invention, which is designed for simplicity, economy, and efficiency. These will become more apparent from the following description. I

In the following detailed description of the invention reference is had to the accompanying drawing which forms a part hereof. Like numerals refer to like parts in all views of the drawing and throughout the description.

In the drawing: I

Fig. 1 illustrates the appearance of the invention in use on a typical can.

Fig. 2 is an enlarged side elevation thereof.

Fig. 3 is a longitudinal section taken on the line 3-3, Fig. 4.

Fig. 4 is a vertical section taken on the line 44, Fig. 3.

Fig. 5 is a detail view of an alternate form of distributing .plug.

Fig. 6 is a detail view illustrating an alternate method of locking the plunger in the cylinder.

In the drawing a typical container or can is indicated at i0 provided with the usual threaded 'filling nipple H. The filling nipple ll receives a threaded cap l2. This cap may be the usual threaded cap furnished with the can or an additional threaded cap furnished with the invention. In either case the invention is applied to this threaded cap l2.

The invention comprises a cylinder member l3 formed with a threaded nipple l4 whichpasses downwardly through a suitable hole formed in the cap l2. The casting I3 is locked to the cap by means of a clamp nut l 5 threaded on the 1934, Serial-No. 714,804

nipple l4 and against a sealing 'washer'ii beneath the cap l2. The cylinder casting I3 is provided with a pump cylinder ll extending to one side thereof and open at its outer extremity. It is also provided with a thumb grip member l8 extending upwardly therefrom. An intake passage is extends downwardly from the bore of the cylinder ll through the threaded nipple l4 to slidably receive a suction tube 20. A threaded valve seat member 2| is positioned in the intake passage I! to form a seat for a ball valve 22.

The cylinder I'I- receives a hollow plunger 23 formed with a stop flange 24 and a piston 23. The stop flange 24 serves as a guide to maintain the plunger in axial alignment with the cylinder bore. The piston 25 is sealed in the cylinder IT preferably by means of a pair of oppositely-facing, cup washers 26. It is prevented from leaving the cylinder by an inwardly turned edge 21 on the open extremity thereof which engages the stop flange 24. A helical compression spring 28 constantly urges the plunger 23 outwardly. The compression spring 23 is compressed between the closed end of the cylinder H and the cup washers 26 and serves to hold the latter in place upon a washer teat 23 formed on the extremity of the plunger 23.

The outer extremity of the plunger 23 is threaded as shown at 30 to receive a nozzle member 3|. The nozzle member 3| is formed with oppositely extending cars 32 for receiving the foreflngers of the user. The extremity of the nozzle member 3| is provided with a discharge orifice 33 and is hollow to receive a distributing plug 34. It will be noted-that the outer extremity of the plunger member 23 is formed with nut faces 35 so that it may be firmly held with a wrench for the removal or replacement of the nozzle 3|.

In use the complete device is threaded onto the nipple ll of the can I. The suction tube 20 is of sufllcient length to terminate just above the bottom of the can. The can and the device are then gripped by the hand as shown in Fig. 1. Contraction of the hand forces the plunger 23 into the cylinder ll to force fluid from the cylinder through the plunger 23 to the nozzle 3|. When released, the spring I! again forces the plunger forwardly to suck additional fluid past the ball valve 22 into the cylinder.

Thedistributing plug shown at 34 contains a spiral thread on its exterior which fits snugly against the inner wall of the nozzle 3|. This imparts a whirling action to the discharging as it exists from the orifices 33.

An alternate form of distributing plug is illustrated in Fig. 5. drical plug formed with a longitudinal groove I in its surface. This plug is designed to replace the plug 34 when the device is to be used upon heavier fluids which are not desired atomized. The size of the groove 36 is determined by the particular viscosity of the fluid to be discharged.

It is desirable to provide some means for the entrance of air to the can ID to replace the discharging fluid. This is accomplished by forming an air groove 31 in the bottom of the casting l3 and extending this groove downwardly through the threads of the threaded nipple I4. This forms a continuous air passage over the top of the cap l2 and into the can.

It is desired to call attention to the fact that the suction tube l2 is removable and replaceable. This facilitates packing the device, and since this tube can be laid alongside the plunger in a comparatively small package and can be easily inserted by the user. This also allows short suction tubes to replace long ones or vice versa so as to adopt the device for containers of various depths. The casting I3 is rotatable upon the capl2, the washer IB always maintaining a sumcient seal, so that the nozzle may be projected in any desired direction from the can.

An alternate method of locking the plunger in the cylinder is illustrated in Fig. 6. In this method a spring wire locking ring 38 is slipped into an annular groove in the extremity of the cylinder to prevent withdrawal of the plunger 23.

While a specific form of the improvement has been described and illustrated herein, it is desired to be understood that the same may be varied, within the scope of the appended claims, without departing from the spirit of the invention.

Having thus described the invention, what is claimed and desired secured by Letters Patent is:-

1. A sprayer for attachment to the threaded nipple of a liquid containing can comprising: a

It consists of a short cylin-- fluid which breaks it into a fine atomized spray cylinder supporting member; means for attaching said member to said threaded nipple; a horizontal cylinder carried by said supporting member and projecting to one side thereof, the projecting extremity of said cylinder being open: the other extremity being closed; a plunger extending into said cylinder through the open end thereof; a spring compressed between said plunger and the closed end of said cylinder; a passage for admitting liquid to said cylinder; a check valve in said passage for preventing return of said liquid; a suction tube extending from said passage; a nozzle member carried on the projecting extremity of said plunger; oppositely extending ears carried by the protruding extremity of said plunger for receiving the forefingers of the user; and a thumb grip member extending from said cylinder for receiving the thumb of the user so that the entire device may be gripped in one hand and contraction of said hand will expel fluid from said cylinder through said nozzle member.

2. The combination ofa can having a threaded neck; a perforated cap closing said neck; a spraying device on said cap comprising: a cylinder member closed on one end from which extends a holding and (operating thumb engaging member, a reciprocating plunger member partially within said cylinder member; holding and operating finger engaging ears mounted on that part. of said plunger member which is not within the said cylinder member, a spring for extending said reciprocating plunger after contraction by means of the hand.

3. A liquid dispenser comprising: a relatively small can adapted to be held in the palm of the hand; a pump cylinder mounted on said can so as to be engaged by the thumb of the hand; a plunger projecting from said pump cylinder; oppositely extendingears projecting from said plunger so as to be engaged by the i'oreflngers of said hand; and a nozzle member extending from said plunger so as to extend between said forefingers.

LESTER ROTI-ICHILD. RUSSELL T. ANDERSON. 

